Practical Asymmetric Synthesis of Hastanecine and Dihydroxyheliotridane by a Claisen Rearrangement/Amine-Epoxide-Opening Sequence
作者:Johann Mulzer、Michael Scharp
DOI:10.1055/s-1993-25913
日期:——
A practical 13-step synthesis of the title compounds suitable for the gram scale has been developed. Key steps are Sharpless resolution, Claisen rearrangement, epoxidation and intramolecular SN2 ring closure to form the pyrrolizidine system.